| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 15 |
0.2%
|
|
| 1983 | 12 |
0.1%
|
|
| 1984 | 38 |
0.4%
|
|
| 1985 | 28 |
0.3%
|
|
| 1986 | 54 |
0.6%
|
|
| 1987 | 45 |
0.5%
|
|
| 1988 | 39 |
0.5%
|
|
| 1989 | 55 |
0.6%
|
|
| 1990 | 100 |
1.2%
|
|
| 1991 | 83 |
1%
|
|
| 1992 | 88 |
1%
|
|
| 1993 | 132 |
1.6%
|
|
| 1994 | 150 |
1.8%
|
|
| 1995 | 150 |
1.8%
|
|
| 1996 | 166 |
1.9%
|
|
| 1997 | 229 |
2.7%
|
|
| 1998 | 195 |
2.3%
|
|
| 1999 | 198 |
2.3%
|
|
| 2000 | 282 |
3.3%
|
|
| 2001 | 266 |
3.1%
|
|
| 2002 | 296 |
3.5%
|
|
| 2003 | 333 |
3.9%
|
|
| 2004 | 320 |
3.8%
|
|
| 2005 | 315 |
3.7%
|
|
| 2006 | 420 |
4.9%
|
|
| 2007 | 386 |
4.5%
|
|
| 2008 | 428 |
5%
|
|
| 2009 | 407 |
4.8%
|
|
| 2010 | 406 |
4.8%
|
|
| 2011 | 398 |
4.7%
|
|
| 2012 | 503 |
5.9%
|
|
| 2013 | 538 |
6.3%
|
|
| 2014 | 668 |
7.8%
|
|
| 2015 | 754 |
8.9%
|
|
| 2016 | 17 |
0.2%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 28655 |